Resguardo inicial

linux-7.2.3/drivers/gpu/drm/nouveau/nvkm/engine/sw/Kbuild

@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: MIT
+nvkm-y += nvkm/engine/sw/base.o
+nvkm-y += nvkm/engine/sw/nv04.o
+nvkm-y += nvkm/engine/sw/nv10.o
+nvkm-y += nvkm/engine/sw/nv50.o
+nvkm-y += nvkm/engine/sw/gf100.o
+
+nvkm-y += nvkm/engine/sw/chan.o
+
+nvkm-y += nvkm/engine/sw/nvsw.o

linux-7.2.3/drivers/gpu/drm/nouveau/nvkm/engine/sw/base.c

@@ -0,0 +1,109 @@
+/*
+ * Copyright 2015 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs <bskeggs@redhat.com>
+ */
+#include "priv.h"
+#include "chan.h"
+
+#include <engine/fifo.h>
+
+bool
+nvkm_sw_mthd(struct nvkm_sw *sw, int chid, int subc, u32 mthd, u32 data)
+{
+	struct nvkm_sw_chan *chan;
+	bool handled = false;
+	unsigned long flags;
+
+	spin_lock_irqsave(&sw->engine.lock, flags);
+	list_for_each_entry(chan, &sw->chan, head) {
+		if (chan->fifo->id == chid) {
+			handled = nvkm_sw_chan_mthd(chan, subc, mthd, data);
+			list_del(&chan->head);
+			list_add(&chan->head, &sw->chan);
+			break;
+		}
+	}
+	spin_unlock_irqrestore(&sw->engine.lock, flags);
+	return handled;
+}
+
+static int
+nvkm_sw_oclass_new(const struct nvkm_oclass *oclass, void *data, u32 size,
+		   struct nvkm_object **pobject)
+{
+	struct nvkm_sw_chan *chan = nvkm_sw_chan(oclass->parent);
+	const struct nvkm_sw_chan_sclass *sclass = oclass->engn;
+	return sclass->ctor(chan, oclass, data, size, pobject);
+}
+
+static int
+nvkm_sw_oclass_get(struct nvkm_oclass *oclass, int index)
+{
+	struct nvkm_sw *sw = nvkm_sw(oclass->engine);
+	int c = 0;
+
+	while (sw->func->sclass[c].ctor) {
+		if (c++ == index) {
+			oclass->engn = &sw->func->sclass[index];
+			oclass->base =  sw->func->sclass[index].base;
+			oclass->base.ctor = nvkm_sw_oclass_new;
+			return index;
+		}
+	}
+
+	return c;
+}
+
+static int
+nvkm_sw_cclass_get(struct nvkm_chan *fifoch, const struct nvkm_oclass *oclass,
+		   struct nvkm_object **pobject)
+{
+	struct nvkm_sw *sw = nvkm_sw(oclass->engine);
+	return sw->func->chan_new(sw, fifoch, oclass, pobject);
+}
+
+static void *
+nvkm_sw_dtor(struct nvkm_engine *engine)
+{
+	return nvkm_sw(engine);
+}
+
+static const struct nvkm_engine_func
+nvkm_sw = {
+	.dtor = nvkm_sw_dtor,
+	.fifo.cclass = nvkm_sw_cclass_get,
+	.fifo.sclass = nvkm_sw_oclass_get,
+};
+
+int
+nvkm_sw_new_(const struct nvkm_sw_func *func, struct nvkm_device *device,
+	     enum nvkm_subdev_type type, int inst, struct nvkm_sw **psw)
+{
+	struct nvkm_sw *sw;
+
+	if (!(sw = *psw = kzalloc_obj(*sw)))
+		return -ENOMEM;
+	INIT_LIST_HEAD(&sw->chan);
+	sw->func = func;
+
+	return nvkm_engine_ctor(&nvkm_sw, device, type, inst, true, &sw->engine);
+}

linux-7.2.3/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.c

@@ -0,0 +1,91 @@
+/*
+ * Copyright 2015 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs <bskeggs@redhat.com>
+ */
+#include "chan.h"
+
+#include <engine/fifo.h>
+
+#include <nvif/event.h>
+#include <nvif/unpack.h>
+
+bool
+nvkm_sw_chan_mthd(struct nvkm_sw_chan *chan, int subc, u32 mthd, u32 data)
+{
+	switch (mthd) {
+	case 0x0000:
+		return true;
+	case 0x0500:
+		nvkm_event_ntfy(&chan->event, 0, NVKM_SW_CHAN_EVENT_PAGE_FLIP);
+		return true;
+	default:
+		if (chan->func->mthd)
+			return chan->func->mthd(chan, subc, mthd, data);
+		break;
+	}
+	return false;
+}
+
+static const struct nvkm_event_func
+nvkm_sw_chan_event = {
+};
+
+static void *
+nvkm_sw_chan_dtor(struct nvkm_object *object)
+{
+	struct nvkm_sw_chan *chan = nvkm_sw_chan(object);
+	struct nvkm_sw *sw = chan->sw;
+	unsigned long flags;
+	void *data = chan;
+
+	if (chan->func->dtor)
+		data = chan->func->dtor(chan);
+	nvkm_event_fini(&chan->event);
+
+	spin_lock_irqsave(&sw->engine.lock, flags);
+	list_del(&chan->head);
+	spin_unlock_irqrestore(&sw->engine.lock, flags);
+	return data;
+}
+
+static const struct nvkm_object_func
+nvkm_sw_chan = {
+	.dtor = nvkm_sw_chan_dtor,
+};
+
+int
+nvkm_sw_chan_ctor(const struct nvkm_sw_chan_func *func, struct nvkm_sw *sw,
+		  struct nvkm_chan *fifo, const struct nvkm_oclass *oclass,
+		  struct nvkm_sw_chan *chan)
+{
+	unsigned long flags;
+
+	nvkm_object_ctor(&nvkm_sw_chan, oclass, &chan->object);
+	chan->func = func;
+	chan->sw = sw;
+	chan->fifo = fifo;
+	spin_lock_irqsave(&sw->engine.lock, flags);
+	list_add(&chan->head, &sw->chan);
+	spin_unlock_irqrestore(&sw->engine.lock, flags);
+
+	return nvkm_event_init(&nvkm_sw_chan_event, &sw->engine.subdev, 1, 1, &chan->event);
+}

linux-7.2.3/drivers/gpu/drm/nouveau/nvkm/engine/sw/chan.h

@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: MIT */
+#ifndef __NVKM_SW_CHAN_H__
+#define __NVKM_SW_CHAN_H__
+#define nvkm_sw_chan(p) container_of((p), struct nvkm_sw_chan, object)
+#include <core/object.h>
+#include <core/event.h>
+
+#include "priv.h"
+
+struct nvkm_sw_chan {
+	const struct nvkm_sw_chan_func *func;
+	struct nvkm_object object;
+	struct nvkm_sw *sw;
+	struct nvkm_chan *fifo;
+	struct list_head head;
+
+#define NVKM_SW_CHAN_EVENT_PAGE_FLIP BIT(0)
+	struct nvkm_event event;
+};
+
+struct nvkm_sw_chan_func {
+	void *(*dtor)(struct nvkm_sw_chan *);
+	bool (*mthd)(struct nvkm_sw_chan *, int subc, u32 mthd, u32 data);
+};
+
+int nvkm_sw_chan_ctor(const struct nvkm_sw_chan_func *, struct nvkm_sw *,
+		      struct nvkm_chan *, const struct nvkm_oclass *,
+		      struct nvkm_sw_chan *);
+bool nvkm_sw_chan_mthd(struct nvkm_sw_chan *, int subc, u32 mthd, u32 data);
+#endif

linux-7.2.3/drivers/gpu/drm/nouveau/nvkm/engine/sw/gf100.c

@@ -0,0 +1,147 @@
+/*
+ * Copyright 2012 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs
+ */
+#include "nv50.h"
+
+#include <core/gpuobj.h>
+#include <subdev/bar.h>
+#include <engine/disp.h>
+#include <engine/fifo.h>
+
+#include <nvif/class.h>
+#include <nvif/event.h>
+
+/*******************************************************************************
+ * software context
+ ******************************************************************************/
+
+static int
+gf100_sw_chan_vblsem_release(struct nvkm_event_ntfy *notify, u32 bits)
+{
+	struct nv50_sw_chan *chan =
+		container_of(notify, typeof(*chan), vblank.notify[notify->id]);
+	struct nvkm_sw *sw = chan->base.sw;
+	struct nvkm_device *device = sw->engine.subdev.device;
+	u32 inst = chan->base.fifo->inst->addr >> 12;
+
+	nvkm_wr32(device, 0x001718, 0x80000000 | inst);
+	nvkm_bar_flush(device->bar);
+	nvkm_wr32(device, 0x06000c, upper_32_bits(chan->vblank.offset));
+	nvkm_wr32(device, 0x060010, lower_32_bits(chan->vblank.offset));
+	nvkm_wr32(device, 0x060014, chan->vblank.value);
+
+	return NVKM_EVENT_DROP;
+}
+
+static bool
+gf100_sw_chan_mthd(struct nvkm_sw_chan *base, int subc, u32 mthd, u32 data)
+{
+	struct nv50_sw_chan *chan = nv50_sw_chan(base);
+	struct nvkm_engine *engine = chan->base.object.engine;
+	struct nvkm_device *device = engine->subdev.device;
+	switch (mthd) {
+	case 0x0400:
+		chan->vblank.offset &= 0x00ffffffffULL;
+		chan->vblank.offset |= (u64)data << 32;
+		return true;
+	case 0x0404:
+		chan->vblank.offset &= 0xff00000000ULL;
+		chan->vblank.offset |= data;
+		return true;
+	case 0x0408:
+		chan->vblank.value = data;
+		return true;
+	case 0x040c:
+		if (data < device->disp->vblank.index_nr) {
+			nvkm_event_ntfy_allow(&chan->vblank.notify[data]);
+			return true;
+		}
+		break;
+	case 0x600: /* MP.PM_UNK000 */
+		nvkm_wr32(device, 0x419e00, data);
+		return true;
+	case 0x644: /* MP.TRAP_WARP_ERROR_EN */
+		if (!(data & ~0x001ffffe)) {
+			nvkm_wr32(device, 0x419e44, data);
+			return true;
+		}
+		break;
+	case 0x6ac: /* MP.PM_UNK0AC */
+		nvkm_wr32(device, 0x419eac, data);
+		return true;
+	default:
+		break;
+	}
+	return false;
+}
+
+static const struct nvkm_sw_chan_func
+gf100_sw_chan = {
+	.dtor = nv50_sw_chan_dtor,
+	.mthd = gf100_sw_chan_mthd,
+};
+
+static int
+gf100_sw_chan_new(struct nvkm_sw *sw, struct nvkm_chan *fifoch,
+		  const struct nvkm_oclass *oclass,
+		  struct nvkm_object **pobject)
+{
+	struct nvkm_disp *disp = sw->engine.subdev.device->disp;
+	struct nv50_sw_chan *chan;
+	int ret, i;
+
+	if (!(chan = kzalloc_obj(*chan)))
+		return -ENOMEM;
+	*pobject = &chan->base.object;
+
+	ret = nvkm_sw_chan_ctor(&gf100_sw_chan, sw, fifoch, oclass,
+				&chan->base);
+	if (ret)
+		return ret;
+
+	for (i = 0; disp && i < disp->vblank.index_nr; i++) {
+		nvkm_event_ntfy_add(&disp->vblank, i, NVKM_DISP_HEAD_EVENT_VBLANK, true,
+				    gf100_sw_chan_vblsem_release, &chan->vblank.notify[i]);
+	}
+
+	return 0;
+}
+
+/*******************************************************************************
+ * software engine/subdev functions
+ ******************************************************************************/
+
+static const struct nvkm_sw_func
+gf100_sw = {
+	.chan_new = gf100_sw_chan_new,
+	.sclass = {
+		{ nvkm_nvsw_new, { -1, -1, NVIF_CLASS_SW_GF100 } },
+		{}
+	}
+};
+
+int
+gf100_sw_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_sw **psw)
+{
+	return nvkm_sw_new_(&gf100_sw, device, type, inst, psw);
+}

linux-7.2.3/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv04.c

@@ -0,0 +1,139 @@
+/*
+ * Copyright 2012 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs
+ */
+#define nv04_sw_chan(p) container_of((p), struct nv04_sw_chan, base)
+#include "priv.h"
+#include "chan.h"
+#include "nvsw.h"
+
+#include <nvif/class.h>
+#include <nvif/if0004.h>
+#include <nvif/ioctl.h>
+#include <nvif/unpack.h>
+
+struct nv04_sw_chan {
+	struct nvkm_sw_chan base;
+	atomic_t ref;
+};
+
+/*******************************************************************************
+ * software object classes
+ ******************************************************************************/
+
+static int
+nv04_nvsw_mthd_get_ref(struct nvkm_nvsw *nvsw, void *data, u32 size)
+{
+	struct nv04_sw_chan *chan = nv04_sw_chan(nvsw->chan);
+	union {
+		struct nv04_nvsw_get_ref_v0 v0;
+	} *args = data;
+	int ret = -ENOSYS;
+
+	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
+		args->v0.ref = atomic_read(&chan->ref);
+	}
+
+	return ret;
+}
+
+static int
+nv04_nvsw_mthd(struct nvkm_nvsw *nvsw, u32 mthd, void *data, u32 size)
+{
+	switch (mthd) {
+	case NV04_NVSW_GET_REF:
+		return nv04_nvsw_mthd_get_ref(nvsw, data, size);
+	default:
+		break;
+	}
+	return -EINVAL;
+}
+
+static const struct nvkm_nvsw_func
+nv04_nvsw = {
+	.mthd = nv04_nvsw_mthd,
+};
+
+static int
+nv04_nvsw_new(struct nvkm_sw_chan *chan, const struct nvkm_oclass *oclass,
+	      void *data, u32 size, struct nvkm_object **pobject)
+{
+	return nvkm_nvsw_new_(&nv04_nvsw, chan, oclass, data, size, pobject);
+}
+
+/*******************************************************************************
+ * software context
+ ******************************************************************************/
+
+static bool
+nv04_sw_chan_mthd(struct nvkm_sw_chan *base, int subc, u32 mthd, u32 data)
+{
+	struct nv04_sw_chan *chan = nv04_sw_chan(base);
+
+	switch (mthd) {
+	case 0x0150:
+		atomic_set(&chan->ref, data);
+		return true;
+	default:
+		break;
+	}
+
+	return false;
+}
+
+static const struct nvkm_sw_chan_func
+nv04_sw_chan = {
+	.mthd = nv04_sw_chan_mthd,
+};
+
+static int
+nv04_sw_chan_new(struct nvkm_sw *sw, struct nvkm_chan *fifo,
+		 const struct nvkm_oclass *oclass, struct nvkm_object **pobject)
+{
+	struct nv04_sw_chan *chan;
+
+	if (!(chan = kzalloc_obj(*chan)))
+		return -ENOMEM;
+	atomic_set(&chan->ref, 0);
+	*pobject = &chan->base.object;
+
+	return nvkm_sw_chan_ctor(&nv04_sw_chan, sw, fifo, oclass, &chan->base);
+}
+
+/*******************************************************************************
+ * software engine/subdev functions
+ ******************************************************************************/
+
+static const struct nvkm_sw_func
+nv04_sw = {
+	.chan_new = nv04_sw_chan_new,
+	.sclass = {
+		{ nv04_nvsw_new, { -1, -1, NVIF_CLASS_SW_NV04 } },
+		{}
+	}
+};
+
+int
+nv04_sw_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_sw **psw)
+{
+	return nvkm_sw_new_(&nv04_sw, device, type, inst, psw);
+}

linux-7.2.3/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv10.c

@@ -0,0 +1,68 @@
+/*
+ * Copyright 2012 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs
+ */
+#include "priv.h"
+#include "chan.h"
+#include "nvsw.h"
+
+#include <nvif/class.h>
+
+/*******************************************************************************
+ * software context
+ ******************************************************************************/
+
+static const struct nvkm_sw_chan_func
+nv10_sw_chan = {
+};
+
+static int
+nv10_sw_chan_new(struct nvkm_sw *sw, struct nvkm_chan *fifo,
+		 const struct nvkm_oclass *oclass, struct nvkm_object **pobject)
+{
+	struct nvkm_sw_chan *chan;
+
+	if (!(chan = kzalloc_obj(*chan)))
+		return -ENOMEM;
+	*pobject = &chan->object;
+
+	return nvkm_sw_chan_ctor(&nv10_sw_chan, sw, fifo, oclass, chan);
+}
+
+/*******************************************************************************
+ * software engine/subdev functions
+ ******************************************************************************/
+
+static const struct nvkm_sw_func
+nv10_sw = {
+	.chan_new = nv10_sw_chan_new,
+	.sclass = {
+		{ nvkm_nvsw_new, { -1, -1, NVIF_CLASS_SW_NV10 } },
+		{}
+	}
+};
+
+int
+nv10_sw_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_sw **psw)
+{
+	return nvkm_sw_new_(&nv10_sw, device, type, inst, psw);
+}

linux-7.2.3/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv50.c

@@ -0,0 +1,142 @@
+/*
+ * Copyright 2012 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs
+ */
+#include "nv50.h"
+
+#include <core/gpuobj.h>
+#include <engine/disp.h>
+#include <engine/fifo/chan.h>
+#include <subdev/bar.h>
+
+#include <nvif/class.h>
+#include <nvif/event.h>
+
+/*******************************************************************************
+ * software context
+ ******************************************************************************/
+
+static int
+nv50_sw_chan_vblsem_release(struct nvkm_event_ntfy *notify, u32 bits)
+{
+	struct nv50_sw_chan *chan =
+		container_of(notify, typeof(*chan), vblank.notify[notify->id]);
+	struct nvkm_sw *sw = chan->base.sw;
+	struct nvkm_device *device = sw->engine.subdev.device;
+
+	nvkm_wr32(device, 0x001704, chan->base.fifo->inst->addr >> 12);
+	nvkm_wr32(device, 0x001710, 0x80000000 | chan->vblank.ctxdma);
+	nvkm_bar_flush(device->bar);
+
+	if (device->chipset == 0x50) {
+		nvkm_wr32(device, 0x001570, chan->vblank.offset);
+		nvkm_wr32(device, 0x001574, chan->vblank.value);
+	} else {
+		nvkm_wr32(device, 0x060010, chan->vblank.offset);
+		nvkm_wr32(device, 0x060014, chan->vblank.value);
+	}
+
+	return NVKM_EVENT_DROP;
+}
+
+static bool
+nv50_sw_chan_mthd(struct nvkm_sw_chan *base, int subc, u32 mthd, u32 data)
+{
+	struct nv50_sw_chan *chan = nv50_sw_chan(base);
+	struct nvkm_engine *engine = chan->base.object.engine;
+	struct nvkm_device *device = engine->subdev.device;
+	switch (mthd) {
+	case 0x018c: chan->vblank.ctxdma = data; return true;
+	case 0x0400: chan->vblank.offset = data; return true;
+	case 0x0404: chan->vblank.value  = data; return true;
+	case 0x0408:
+		if (data < device->disp->vblank.index_nr) {
+			nvkm_event_ntfy_allow(&chan->vblank.notify[data]);
+			return true;
+		}
+		break;
+	default:
+		break;
+	}
+	return false;
+}
+
+void *
+nv50_sw_chan_dtor(struct nvkm_sw_chan *base)
+{
+	struct nv50_sw_chan *chan = nv50_sw_chan(base);
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(chan->vblank.notify); i++)
+		nvkm_event_ntfy_del(&chan->vblank.notify[i]);
+
+	return chan;
+}
+
+static const struct nvkm_sw_chan_func
+nv50_sw_chan = {
+	.dtor = nv50_sw_chan_dtor,
+	.mthd = nv50_sw_chan_mthd,
+};
+
+static int
+nv50_sw_chan_new(struct nvkm_sw *sw, struct nvkm_chan *fifoch,
+		 const struct nvkm_oclass *oclass, struct nvkm_object **pobject)
+{
+	struct nvkm_disp *disp = sw->engine.subdev.device->disp;
+	struct nv50_sw_chan *chan;
+	int ret, i;
+
+	if (!(chan = kzalloc_obj(*chan)))
+		return -ENOMEM;
+	*pobject = &chan->base.object;
+
+	ret = nvkm_sw_chan_ctor(&nv50_sw_chan, sw, fifoch, oclass, &chan->base);
+	if (ret)
+		return ret;
+
+	for (i = 0; disp && i < disp->vblank.index_nr; i++) {
+		nvkm_event_ntfy_add(&disp->vblank, i, NVKM_DISP_HEAD_EVENT_VBLANK, true,
+				    nv50_sw_chan_vblsem_release, &chan->vblank.notify[i]);
+	}
+
+	return 0;
+}
+
+/*******************************************************************************
+ * software engine/subdev functions
+ ******************************************************************************/
+
+static const struct nvkm_sw_func
+nv50_sw = {
+	.chan_new = nv50_sw_chan_new,
+	.sclass = {
+		{ nvkm_nvsw_new, { -1, -1, NVIF_CLASS_SW_NV50 } },
+		{}
+	}
+};
+
+int
+nv50_sw_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_sw **psw)
+{
+	return nvkm_sw_new_(&nv50_sw, device, type, inst, psw);
+}

linux-7.2.3/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv50.h

@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: MIT */
+#ifndef __NVKM_SW_NV50_H__
+#define __NVKM_SW_NV50_H__
+#define nv50_sw_chan(p) container_of((p), struct nv50_sw_chan, base)
+#include "priv.h"
+#include "chan.h"
+#include "nvsw.h"
+#include <core/event.h>
+
+struct nv50_sw_chan {
+	struct nvkm_sw_chan base;
+	struct {
+		struct nvkm_event_ntfy notify[4];
+		u32 ctxdma;
+		u64 offset;
+		u32 value;
+	} vblank;
+};
+
+void *nv50_sw_chan_dtor(struct nvkm_sw_chan *);
+#endif

linux-7.2.3/drivers/gpu/drm/nouveau/nvkm/engine/sw/nvsw.c

@@ -0,0 +1,86 @@
+/*
+ * Copyright 2015 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs <bskeggs@redhat.com>
+ */
+#include "nvsw.h"
+#include "chan.h"
+
+#include <nvif/if0004.h>
+
+static int
+nvkm_nvsw_uevent(struct nvkm_object *object, void *argv, u32 argc, struct nvkm_uevent *uevent)
+{
+	union nv04_nvsw_event_args *args = argv;
+
+	if (!uevent)
+		return 0;
+	if (argc != sizeof(args->vn))
+		return -ENOSYS;
+
+	return nvkm_uevent_add(uevent, &nvkm_nvsw(object)->chan->event, 0,
+			       NVKM_SW_CHAN_EVENT_PAGE_FLIP, NULL);
+}
+
+static int
+nvkm_nvsw_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
+{
+	struct nvkm_nvsw *nvsw = nvkm_nvsw(object);
+
+	if (nvsw->func->mthd)
+		return nvsw->func->mthd(nvsw, mthd, data, size);
+
+	return -ENODEV;
+}
+
+static const struct nvkm_object_func
+nvkm_nvsw_ = {
+	.mthd = nvkm_nvsw_mthd,
+	.uevent = nvkm_nvsw_uevent,
+};
+
+int
+nvkm_nvsw_new_(const struct nvkm_nvsw_func *func, struct nvkm_sw_chan *chan,
+	       const struct nvkm_oclass *oclass, void *data, u32 size,
+	       struct nvkm_object **pobject)
+{
+	struct nvkm_nvsw *nvsw;
+
+	if (!(nvsw = kzalloc_obj(*nvsw)))
+		return -ENOMEM;
+	*pobject = &nvsw->object;
+
+	nvkm_object_ctor(&nvkm_nvsw_, oclass, &nvsw->object);
+	nvsw->func = func;
+	nvsw->chan = chan;
+	return 0;
+}
+
+static const struct nvkm_nvsw_func
+nvkm_nvsw = {
+};
+
+int
+nvkm_nvsw_new(struct nvkm_sw_chan *chan, const struct nvkm_oclass *oclass,
+	      void *data, u32 size, struct nvkm_object **pobject)
+{
+	return nvkm_nvsw_new_(&nvkm_nvsw, chan, oclass, data, size, pobject);
+}

linux-7.2.3/drivers/gpu/drm/nouveau/nvkm/engine/sw/nvsw.h

@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: MIT */
+#ifndef __NVKM_NVSW_H__
+#define __NVKM_NVSW_H__
+#define nvkm_nvsw(p) container_of((p), struct nvkm_nvsw, object)
+#include <core/object.h>
+
+struct nvkm_nvsw {
+	struct nvkm_object object;
+	const struct nvkm_nvsw_func *func;
+	struct nvkm_sw_chan *chan;
+};
+
+struct nvkm_nvsw_func {
+	int (*mthd)(struct nvkm_nvsw *, u32 mthd, void *data, u32 size);
+};
+
+int nvkm_nvsw_new_(const struct nvkm_nvsw_func *, struct nvkm_sw_chan *,
+		   const struct nvkm_oclass *, void *data, u32 size,
+		   struct nvkm_object **pobject);
+int nvkm_nvsw_new(struct nvkm_sw_chan *, const struct nvkm_oclass *,
+		  void *data, u32 size, struct nvkm_object **pobject);
+#endif

linux-7.2.3/drivers/gpu/drm/nouveau/nvkm/engine/sw/priv.h

@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: MIT */
+#ifndef __NVKM_SW_PRIV_H__
+#define __NVKM_SW_PRIV_H__
+#define nvkm_sw(p) container_of((p), struct nvkm_sw, engine)
+#include <engine/sw.h>
+struct nvkm_sw_chan;
+
+int nvkm_sw_new_(const struct nvkm_sw_func *, struct nvkm_device *, enum nvkm_subdev_type, int,
+		 struct nvkm_sw **);
+
+struct nvkm_sw_chan_sclass {
+	int (*ctor)(struct nvkm_sw_chan *, const struct nvkm_oclass *,
+		    void *data, u32 size, struct nvkm_object **);
+	struct nvkm_sclass base;
+};
+
+struct nvkm_sw_func {
+	int (*chan_new)(struct nvkm_sw *, struct nvkm_chan *,
+			const struct nvkm_oclass *, struct nvkm_object **);
+	const struct nvkm_sw_chan_sclass sclass[];
+};
+#endif